It can measure the voltage and current of 8 to 24 series-connected battery packs. The AFE (Automatic External Wire) of this solution achieves a voltage measurement accuracy of +/-2.9 mV, which is currently the highest standard in the industry. It features a built-in safety self-test function, providing highly reliable system safety control. A full range of external interfaces allows for connection in various scenarios. It supports parallel connection of up to 4 battery packs for capacity expansion and emergency power supply.

• Feature
  

  -8 to 24 series lithium battery management

  -4-channel cell and 1-channel MOS temperature detection

  -Pre-charge and heating management

  -RS-485 / CAN communication

  -Cell balancing management

  -High-precision SOC / SOH estimation

  -4-group parallel operation and load detection

• Specifications
  

  KA49701 (1-chip battery monitoring IC)

  -AFE voltage measurement accuracy: ±2.9 mV (industry-leading)

  -Main circuits (ADC, MUX, etc.) include self-diagnostic functions

  -Battery monitoring IC supports self-diagnosis of potential faults

  -Safe system design with fewer external circuits

  M2A23 (32-bit Arm® Cortex® -M23)

  -Operating frequency up to 72 MHz

  -Operating Voltage: 2.5 V to 5.5 V

  -Operating temperature: -40°C to +125°C

  -EFT 4.4 kV

  -ESD HBM 8 kV

• System Block Diagram